4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Open Headers

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Old May 4, 2006 | 06:52 AM
  #21  
Dragon02GT's Avatar
Dragon02GT
2nd Gear Member
 
Joined: Feb 2006
Posts: 487
From:
Default RE: Open Headers


ORIGINAL: rbstang

ORIGINAL: Master

gas milage will suck also
+1
my h pipe is leaking and i get 150 miles on 1 tank... 16 gallon tank...

150/16 = 9mpg.... so sad..

and my daily driver now is a 99 tahoe
250 miles on 20 gallon tank...

250/20 = 12.5mpg... even sadder.
9 mpg froma leaking h-pipe. I think you might have another problem, unless you have a gaping hole in you h pipe.
Old May 4, 2006 | 11:35 AM
  #22  
blk40th's Avatar
blk40th
4th Gear Member
 
Joined: Apr 2006
Posts: 1,174
From:
Default RE: Open Headers

yea when i put the headers on my car IT SOUNDED LIKE S***. also i cruised it down the street real quick and it took forever. put them on with no cats and itll be quite loud.
Old May 4, 2006 | 05:07 PM
  #23  
bluepony4.6's Avatar
bluepony4.6
3rd Gear Member
 
Joined: Jan 2006
Posts: 903
From: North Carolina
Default RE: Open Headers


ORIGINAL: Dragon02GT


ORIGINAL: rbstang

ORIGINAL: Master

gas milage will suck also
+1
my h pipe is leaking and i get 150 miles on 1 tank... 16 gallon tank...

150/16 = 9mpg.... so sad..

and my daily driver now is a 99 tahoe
250 miles on 20 gallon tank...

250/20 = 12.5mpg... even sadder.
9 mpg froma leaking h-pipe. I think you might have another problem, unless you have a gaping hole in you h pipe.
Sounds like his car is in limp mode.
Old May 4, 2006 | 05:10 PM
  #24  
rbstang's Avatar
rbstang
6th Gear Member
 
Joined: Apr 2005
Posts: 5,608
From: Wilmington, NC
Default RE: Open Headers

ORIGINAL: Dragon02GT


ORIGINAL: rbstang

ORIGINAL: Master

gas milage will suck also
+1
my h pipe is leaking and i get 150 miles on 1 tank... 16 gallon tank...

150/16 = 9mpg.... so sad..

and my daily driver now is a 99 tahoe
250 miles on 20 gallon tank...

250/20 = 12.5mpg... even sadder.
9 mpg froma leaking h-pipe. I think you might have another problem, unless you have a gaping hole in you h pipe.
its leaking from the driver side H to Header hookup yes theres a huge gap there.
Old May 4, 2006 | 05:41 PM
  #25  
n/a_threat's Avatar
n/a_threat
2nd Gear Member
 
Joined: Dec 2005
Posts: 488
From:
Default RE: Open Headers

Open headers means no aft o2 sensors, meaning your car would run like crap. You can't hook cheater MIL's to something that isn't there. It is a very very bad idea. Take all of our advice.
Old May 4, 2006 | 05:49 PM
  #26  
monkeydude3's Avatar
monkeydude3
6th Gear Member
 
Joined: Sep 2005
Posts: 5,128
From:
Default RE: Open Headers

it's the kind of thing you only do on a full all out drag car... that only sees a 1/4 mile pass and then it rests... even then usually they have some sort of exhaust beyond the headers
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